Transformer



UNITED STATES PATENT, omca.

- nann n. eananrson, on NEW roman. y.

rnmsr omrnn.

To all whom it may concern I Be it known that I, HARRY D. GARnn'rsoN,

a citizen of the United States, and a resident of the city, county, and State of New York, have invented a new and useful Im rovement in Transformers, of which the, ollowing is a specification.

The object of my invention is to provide a simple, small, com act, efiicient and durable transformer whlch will be adapted to.

transform a commercial alternating current of the usual kind, say one of 110 or 220 volts down to about 10 volts so it will be suitable for the hot cathode of an X-ray tube or other devices which require a low potential alternating current. This and other objects areaccomplished by my invention, one embodiment of which is hereinafter moreparticularly set forth.

For a more particular description of my invention, reference is to be had to the accompanying drawings, forming a part hereof in which higure 1 is a longitudinal section of my im roved transformer and ig. 2 is a sectional view taken substantially on the line 2-2 of Fig. 1, looking in the direction of the arrows. V

Throughout the various views of the drawings, similar reference characters designate similar parts.

My improved transformer 1 is rovided with a sultable casing 2 which is a apted to hold oil u to the level 3, as shown b. dotted lines in ig. 1, or any other suitab 6 level and this casing is surmounted by a cover 4 which is fixed thereto with a liquid-tight joint, in any suitable manner, as by bolts. All the electric and magnetic parts of this transformer, except the casing 2, are secured to the cover 4 through the insulating bushing 5 and removable with it as will a pear from the following description. T 0

cover 4, at its center, or any other con-- venient place, carries this insulating bushing 5 which is preferably in the form of a high tension insulator or it may be in any 7 other suitable form, and this insulator is provided witha nut 6 by. which it is fixed in place on the cover 4. This insulator carries a metal tube 7 at its center which tube is vided with a suitable Specification of Letters Patent. Patented Feb, 8 192 1, a lication-area ma as, 1918 se'mi no. 237,025.

fixed therein and extends both above and below the insulator 5. 7 At its upperend it' tionssoas topermit binding posts 10 and 11 on the insulator 8 to have connecting lead,

wires 12 and 13 pass through the ,ca 9 and tube 7 and insulator 5 to'the secondary 14 of the transformer 1 which secondary is mounted in a manner which will now be described.

The lower end of the metal tube 7 is pronut 15 which presses against a fiber washer 16 which in turn is pressed against the insulator 5 and from which are hung two parallel disks 17 that contain and support a suitable insulatin tube 18'on which the secondary 14 is wound and in which the primary 19 is mounted. This primary 19 has suitable lead wires 20 I and 21 which run to binding posts 22 and flared and bearing against the interior of the iron casing 2 so as to give the transformer a good closed magnetic circuit through this casing and the core.

From the foregoing it is apparent that I when the cover is removed, all the magnetic and other parts are removed with it except the iron cas1ng 2 and when it is restored,

these parts are also put in place so that no adjustments or other changes are necessary while the magnetic and electrical arts are in position in the iron casing 2. This enables a ready assembling of the transformer or a ready dis-assembling for examination or repairs. While Iv have shown and described one embodiment of my invention, it is obvious that it is not restricted thereto, but that it is broad enough to cover all structures that come within the scope of the annexed claims.

Having thus described my invention, what I claim is:

1. In a device of the class described,v a cover, an insulator with a metal tube,'a washer at the lower end of this tube, means for securing the same to the tube and intube and an insulator, disks connected to sulator, disksconnected to said washer, a said washer, and a tube connecting said 10 tube connecting said disks, a secondary on disks, a secondary on said tube and a prisaid tube and a primary in said tube. mary in said tube and a core in said pri- 2. In a device of the class described, a mary adapted to bear against the iron cover, an iron casing, an insulator with a casing. metal tube, washer at the lower end of this tube, means for securing the same to the HARRY D. GARRETSON. 

